000			01824aab a2200217 4500
008			240624b20062006|||br||| |||| 00| 0 eng d
022			_a15988198
100			_aS. A. Meftah _9882561
100			_aA. Tounsi _9882562
100			_aE. A. Adda-Bedia _9882563
245			_aDynamic behaviour of stiffened and damaged coupled shear walls
300			_a285-299 p.
520			_aThe free vibration of stiffened and damaged coupled shear walls is investigated using the mixed finite element method. The anisotropic damage model is adopted to describe the damage extent of the reinforced concrete shear wall element. The internal energy of a locally damaged shear wall element is derived. Polynomial shape functions established by Kwan are used to present the component of displacements vector on each point within the wall element. The principle of virtual work is employed to deduce the stiffness matrix of a damaged shear wall element. The stiffened system is reinforced by an additional stiffening beam at some level of the structure. This induces additional axial forces, and thus reduces the bending moments in the walls and the lateral deflection, and increases the natural frequencies. The effects of the damage extent and the stiffening beam on the free vibration characteristics of the structure are studied. The optimal location of the stiffening beam for increasing as far as possible the first natural frequency of vibration is presented.
650			_aFree Vibration _9677962
650			_aDamaged Reinforced Concrete Structures _9882564
650			_aCoupled Shear Wall _9882565
650			_aFinite Element Method _9166415
773	0		_tComputers and Concrete: An International Journal _x15988198 _dDaejeon, Korea : Techno Press
856			_uDOI: 10.12989/cac.2006.3.5.285
942			_2ddc _n0 _cART _o14993 _pMr. Muhammad Rafique Al Haj Rajab Ali (Late)
999			_c815308 _d815308